EP2284240A1 - Matière réfléchissant les infrarouges et son procédé de fabrication et peinture et composition de résine la contenant - Google Patents
Matière réfléchissant les infrarouges et son procédé de fabrication et peinture et composition de résine la contenant Download PDFInfo
- Publication number
- EP2284240A1 EP2284240A1 EP09750616A EP09750616A EP2284240A1 EP 2284240 A1 EP2284240 A1 EP 2284240A1 EP 09750616 A EP09750616 A EP 09750616A EP 09750616 A EP09750616 A EP 09750616A EP 2284240 A1 EP2284240 A1 EP 2284240A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compound
- reflective material
- infrared reflective
- sample
- titanium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 162
- 239000011342 resin composition Substances 0.000 title claims abstract description 12
- 239000003973 paint Substances 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title description 7
- 239000010936 titanium Substances 0.000 claims abstract description 149
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 101
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 101
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 90
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 85
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 67
- 239000000203 mixture Substances 0.000 claims abstract description 66
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 64
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 63
- 150000001875 compounds Chemical class 0.000 claims abstract description 62
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000011701 zinc Substances 0.000 claims abstract description 54
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 53
- 239000010955 niobium Substances 0.000 claims abstract description 53
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 53
- 230000000737 periodic effect Effects 0.000 claims abstract description 50
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract description 49
- 150000001342 alkaline earth metals Chemical class 0.000 claims abstract description 46
- 238000010304 firing Methods 0.000 claims abstract description 43
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 37
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 238000002156 mixing Methods 0.000 claims abstract description 33
- 229910052733 gallium Inorganic materials 0.000 claims abstract description 16
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims abstract description 15
- 150000001341 alkaline earth metal compounds Chemical class 0.000 claims abstract description 13
- 150000002506 iron compounds Chemical class 0.000 claims abstract description 12
- 150000002697 manganese compounds Chemical class 0.000 claims abstract description 12
- 150000003752 zinc compounds Chemical class 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims description 87
- 238000000034 method Methods 0.000 claims description 52
- 239000011777 magnesium Substances 0.000 claims description 39
- 239000011248 coating agent Substances 0.000 claims description 34
- 238000000576 coating method Methods 0.000 claims description 34
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 30
- 229910052749 magnesium Inorganic materials 0.000 claims description 30
- 239000011575 calcium Substances 0.000 claims description 16
- 150000002484 inorganic compounds Chemical class 0.000 claims description 15
- 229910010272 inorganic material Inorganic materials 0.000 claims description 15
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 11
- 229910052791 calcium Inorganic materials 0.000 claims description 11
- 150000002894 organic compounds Chemical class 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 9
- 239000010703 silicon Substances 0.000 claims description 9
- 150000001339 alkali metal compounds Chemical class 0.000 claims description 8
- 229910052718 tin Inorganic materials 0.000 claims description 8
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 7
- 239000002585 base Substances 0.000 claims description 6
- 229910052698 phosphorus Inorganic materials 0.000 claims description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052787 antimony Inorganic materials 0.000 claims description 5
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 5
- 229910052788 barium Inorganic materials 0.000 claims description 5
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 5
- 239000011574 phosphorus Substances 0.000 claims description 5
- 229910052712 strontium Inorganic materials 0.000 claims description 5
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 5
- 150000002681 magnesium compounds Chemical class 0.000 claims 1
- 239000011572 manganese Substances 0.000 abstract description 111
- 229910052748 manganese Inorganic materials 0.000 abstract description 75
- -1 etc. Chemical compound 0.000 abstract description 15
- 229910052742 iron Inorganic materials 0.000 abstract description 7
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 150000003609 titanium compounds Chemical class 0.000 abstract description 2
- 238000010422 painting Methods 0.000 abstract 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 94
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 88
- 239000000126 substance Substances 0.000 description 72
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 70
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 69
- 238000002310 reflectometry Methods 0.000 description 59
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 46
- 229910000019 calcium carbonate Inorganic materials 0.000 description 44
- 239000004408 titanium dioxide Substances 0.000 description 43
- AOWKSNWVBZGMTJ-UHFFFAOYSA-N calcium titanate Chemical compound [Ca+2].[O-][Ti]([O-])=O AOWKSNWVBZGMTJ-UHFFFAOYSA-N 0.000 description 32
- 239000011651 chromium Substances 0.000 description 30
- 239000004570 mortar (masonry) Substances 0.000 description 30
- 239000002002 slurry Substances 0.000 description 30
- 229910052804 chromium Inorganic materials 0.000 description 27
- 238000005259 measurement Methods 0.000 description 26
- 239000000843 powder Substances 0.000 description 26
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 24
- 229910002971 CaTiO3 Inorganic materials 0.000 description 23
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 20
- 238000001514 detection method Methods 0.000 description 20
- 239000000377 silicon dioxide Substances 0.000 description 19
- 239000000049 pigment Substances 0.000 description 16
- 229920005989 resin Polymers 0.000 description 16
- 239000011347 resin Substances 0.000 description 16
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 13
- 229910001424 calcium ion Inorganic materials 0.000 description 13
- 238000010828 elution Methods 0.000 description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 12
- 239000003795 chemical substances by application Substances 0.000 description 11
- 239000002994 raw material Substances 0.000 description 11
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 10
- IJKVHSBPTUYDLN-UHFFFAOYSA-N dihydroxy(oxo)silane Chemical compound O[Si](O)=O IJKVHSBPTUYDLN-UHFFFAOYSA-N 0.000 description 9
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 239000000976 ink Substances 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 239000012071 phase Substances 0.000 description 8
- 229910000018 strontium carbonate Inorganic materials 0.000 description 8
- FFQALBCXGPYQGT-UHFFFAOYSA-N 2,4-difluoro-5-(trifluoromethyl)aniline Chemical compound NC1=CC(C(F)(F)F)=C(F)C=C1F FFQALBCXGPYQGT-UHFFFAOYSA-N 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 229910052594 sapphire Inorganic materials 0.000 description 7
- 238000010532 solid phase synthesis reaction Methods 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000011260 aqueous acid Substances 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 6
- 239000012298 atmosphere Substances 0.000 description 6
- 229910052796 boron Inorganic materials 0.000 description 6
- 238000000635 electron micrograph Methods 0.000 description 6
- 239000000706 filtrate Substances 0.000 description 6
- 150000004679 hydroxides Chemical class 0.000 description 6
- 235000002639 sodium chloride Nutrition 0.000 description 6
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 6
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 5
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 229910001679 gibbsite Inorganic materials 0.000 description 5
- 229910052738 indium Inorganic materials 0.000 description 5
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 5
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 4
- OOSYCERWOGUQJY-UHFFFAOYSA-N calcium;dioxido(dioxo)manganese Chemical compound [Ca+2].[O-][Mn]([O-])(=O)=O OOSYCERWOGUQJY-UHFFFAOYSA-N 0.000 description 4
- BDAGIHXWWSANSR-NJFSPNSNSA-N hydroxyformaldehyde Chemical compound O[14CH]=O BDAGIHXWWSANSR-NJFSPNSNSA-N 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- 239000006104 solid solution Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- LEDMRZGFZIAGGB-UHFFFAOYSA-L strontium carbonate Chemical compound [Sr+2].[O-]C([O-])=O LEDMRZGFZIAGGB-UHFFFAOYSA-L 0.000 description 4
- 229910001928 zirconium oxide Inorganic materials 0.000 description 4
- 229920000178 Acrylic resin Polymers 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 239000004115 Sodium Silicate Substances 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 3
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910052593 corundum Inorganic materials 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 3
- 229910052808 lithium carbonate Inorganic materials 0.000 description 3
- 150000002642 lithium compounds Chemical class 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000001103 potassium chloride Substances 0.000 description 3
- 235000011164 potassium chloride Nutrition 0.000 description 3
- 150000003112 potassium compounds Chemical class 0.000 description 3
- 229910052761 rare earth metal Inorganic materials 0.000 description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 3
- 229910052911 sodium silicate Inorganic materials 0.000 description 3
- 230000002194 synthesizing effect Effects 0.000 description 3
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- 235000014692 zinc oxide Nutrition 0.000 description 3
- DJOYTAUERRJRAT-UHFFFAOYSA-N 2-(n-methyl-4-nitroanilino)acetonitrile Chemical compound N#CCN(C)C1=CC=C([N+]([O-])=O)C=C1 DJOYTAUERRJRAT-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 2
- 229910017060 Fe Cr Inorganic materials 0.000 description 2
- 229910002544 Fe-Cr Inorganic materials 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 239000004111 Potassium silicate Substances 0.000 description 2
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 2
- 125000000751 azo group Chemical group [*]N=N[*] 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 229910002113 barium titanate Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- QHIWVLPBUQWDMQ-UHFFFAOYSA-N butyl prop-2-enoate;methyl 2-methylprop-2-enoate;prop-2-enoic acid Chemical compound OC(=O)C=C.COC(=O)C(C)=C.CCCCOC(=O)C=C QHIWVLPBUQWDMQ-UHFFFAOYSA-N 0.000 description 2
- WEUCVIBPSSMHJG-UHFFFAOYSA-N calcium titanate Chemical compound [O-2].[O-2].[O-2].[Ca+2].[Ti+4] WEUCVIBPSSMHJG-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000001027 hydrothermal synthesis Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000001023 inorganic pigment Substances 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 description 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 2
- IIPYXGDZVMZOAP-UHFFFAOYSA-N lithium nitrate Chemical compound [Li+].[O-][N+]([O-])=O IIPYXGDZVMZOAP-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000012860 organic pigment Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920006122 polyamide resin Polymers 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 description 2
- 229910052913 potassium silicate Inorganic materials 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 150000004760 silicates Chemical class 0.000 description 2
- 150000003377 silicon compounds Chemical class 0.000 description 2
- 229910001388 sodium aluminate Inorganic materials 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910001887 tin oxide Inorganic materials 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910017813 Cu—Cr Inorganic materials 0.000 description 1
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 229920000995 Spectralon Polymers 0.000 description 1
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- 150000004645 aluminates Chemical class 0.000 description 1
- 229920003180 amino resin Polymers 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 1
- 150000004056 anthraquinones Chemical class 0.000 description 1
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- IRERQBUNZFJFGC-UHFFFAOYSA-L azure blue Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[S-]S[S-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] IRERQBUNZFJFGC-UHFFFAOYSA-L 0.000 description 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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- 239000004566 building material Substances 0.000 description 1
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- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 1
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- 239000003086 colorant Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
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- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
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- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- AJNVQOSZGJRYEI-UHFFFAOYSA-N digallium;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Ga+3].[Ga+3] AJNVQOSZGJRYEI-UHFFFAOYSA-N 0.000 description 1
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 description 1
- BTVJMZJWDVRDMT-UHFFFAOYSA-N dioxido(dioxo)manganese yttrium(3+) Chemical compound [Y+3].[Y+3].[O-][Mn]([O-])(=O)=O.[O-][Mn]([O-])(=O)=O.[O-][Mn]([O-])(=O)=O BTVJMZJWDVRDMT-UHFFFAOYSA-N 0.000 description 1
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- 238000005469 granulation Methods 0.000 description 1
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- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
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- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- DCYOBGZUOMKFPA-UHFFFAOYSA-N iron(2+);iron(3+);octadecacyanide Chemical compound [Fe+2].[Fe+2].[Fe+2].[Fe+3].[Fe+3].[Fe+3].[Fe+3].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] DCYOBGZUOMKFPA-UHFFFAOYSA-N 0.000 description 1
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 description 1
- YWXYYJSYQOXTPL-SLPGGIOYSA-N isosorbide mononitrate Chemical compound [O-][N+](=O)O[C@@H]1CO[C@@H]2[C@@H](O)CO[C@@H]21 YWXYYJSYQOXTPL-SLPGGIOYSA-N 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- INHCSSUBVCNVSK-UHFFFAOYSA-L lithium sulfate Inorganic materials [Li+].[Li+].[O-]S([O-])(=O)=O INHCSSUBVCNVSK-UHFFFAOYSA-L 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 1
- 150000002902 organometallic compounds Chemical class 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 1
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- 239000003504 photosensitizing agent Substances 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
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- 150000003077 polyols Chemical class 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 235000011181 potassium carbonates Nutrition 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
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- 235000011151 potassium sulphates Nutrition 0.000 description 1
- LDQICAMJIICDLF-UHFFFAOYSA-N potassium;iron(2+);iron(3+);hexacyanide Chemical compound [K+].[Fe+2].[Fe+3].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] LDQICAMJIICDLF-UHFFFAOYSA-N 0.000 description 1
- KVOIJEARBNBHHP-UHFFFAOYSA-N potassium;oxido(oxo)alumane Chemical compound [K+].[O-][Al]=O KVOIJEARBNBHHP-UHFFFAOYSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 229960003351 prussian blue Drugs 0.000 description 1
- 239000013225 prussian blue Substances 0.000 description 1
- 239000001054 red pigment Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 150000003388 sodium compounds Chemical class 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003746 solid phase reaction Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- VEALVRVVWBQVSL-UHFFFAOYSA-N strontium titanate Chemical compound [Sr+2].[O-][Ti]([O-])=O VEALVRVVWBQVSL-UHFFFAOYSA-N 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- RBTVSNLYYIMMKS-UHFFFAOYSA-N tert-butyl 3-aminoazetidine-1-carboxylate;hydrochloride Chemical compound Cl.CC(C)(C)OC(=O)N1CC(N)C1 RBTVSNLYYIMMKS-UHFFFAOYSA-N 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 150000003606 tin compounds Chemical class 0.000 description 1
- CVNKFOIOZXAFBO-UHFFFAOYSA-J tin(4+);tetrahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[Sn+4] CVNKFOIOZXAFBO-UHFFFAOYSA-J 0.000 description 1
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Images
Classifications
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/003—Titanates
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/003—Titanates
- C01G23/006—Alkaline earth titanates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G25/00—Compounds of zirconium
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- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G25/00—Compounds of zirconium
- C01G25/006—Compounds containing, besides zirconium, two or more other elements, with the exception of oxygen or hydrogen
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/004—Reflecting paints; Signal paints
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/02—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of crystals, e.g. rock-salt, semi-conductors
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/0808—Mirrors having a single reflecting layer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/30—Three-dimensional structures
- C01P2002/34—Three-dimensional structures perovskite-type (ABO3)
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
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- C01P2002/52—Solid solutions containing elements as dopants
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- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/50—Solid solutions
- C01P2002/52—Solid solutions containing elements as dopants
- C01P2002/54—Solid solutions containing elements as dopants one element only
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- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
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- C01P2004/03—Particle morphology depicted by an image obtained by SEM
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- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
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- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
- C01P2006/62—L* (lightness axis)
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
- C01P2006/63—Optical properties, e.g. expressed in CIELAB-values a* (red-green axis)
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
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- C01P2006/00—Physical properties of inorganic compounds
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- C01P2006/64—Optical properties, e.g. expressed in CIELAB-values b* (yellow-blue axis)
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K9/02—Ingredients treated with inorganic substances
Definitions
- the present invention relates to a perovskite type complex oxide infrared reflective material and a method of producing the same.
- the present invention also relates to a coating material and a resin composition containing the infrared reflective material, and further an infrared reflector using the coating material.
- Infrared reflective materials are materials that reflect infrared rays included in sunlight or the like.
- the infrared reflective materials are used for relaxation of a heat island phenomenon, increase in air conditioning efficiency of buildings in summer, and the like because the infrared reflective materials can reduce the amount of infrared rays absorbed by a ground surface covered with asphalt, concrete, or the like, buildings, and the like.
- compounds containing chromium such as Cr 2 O 3 , Cu-Cr complex oxides, Fe-Cr complex oxides, Co-Fe-Cr complex oxides, and Cu-Cr-Mn complex oxides as black materials, for example, are known (see Patent Document 1).
- Compounds not containing chromium including complex oxides of an alkaline earth metal element and manganese such as Ca-Mn complex oxides, Ba-Mn complex oxides, and Ba-Mn complex oxides doped with 4% by weight of titanium dioxide (see Patent Document 2) and a complex oxide of a rare earth element and manganese such as Y-Mn complex oxide (see Patent Document 3) are also known.
- Compounds such as rod-like titanium oxide (see Patent Document 4) as white materials are also under development.
- a perovskite type complex oxide containing an alkaline earth metal element and at least one element selected from titanium, zirconium, and niobium has high infrared reflectivity.
- a complex oxide containing this complex oxide and a manganese element and/or an iron element serves as a black material having sufficient infrared reflectivity.
- the two complex oxides have higher infrared reflectivity when a Group IIIa element in the periodic table such as aluminum and gallium and a zinc element are contained in the two complex oxides.
- the infrared reflective material can be produced by mixing an alkaline earth metal compound with a compound of at least one element selected from titanium, zirconium, and niobium, and firing a mixture thereof; and in the case where a manganese element and/or an iron element or a Group IIIa element in the periodic table and a zinc element are contained, the infrared reflective material can be produced by further mixing a manganese compound and/or an iron compound or a compound of the Group IIIa element in the periodic table and a zinc compound when the alkaline earth metal compound is mixed with the compound of the at least one element selected from titanium, zirconium, and niobium, and firing the mixture.
- the perovskite type complex oxide is in the form of a powder
- the perovskite type complex oxide can be blended with a coating material or a resin composition to be used for various applications, and completed the invention.
- the present invention is an infrared reflective material comprising a perovskite type complex oxide containing at least an alkaline earth metal element and at least one element selected from titanium, zirconium, and niobium. Moreover, the present invention is an infrared reflective material comprising a perovskite type complex oxide further containing a manganese element and/or an iron element in the complex oxide. Further, the present invention is an infrared reflective material comprising a perovskite type complex oxide further containing a Group IIIa element in the periodic table such as aluminum and gallium and a zinc element in the two complex oxides.
- the present invention is a method of producing the perovskite type complex oxide infrared reflective material, a coating material and resin composition containing the perovskite type complex oxide infrared reflective material, and an infrared reflector onto which the coating material is applied.
- the infrared reflective material according to the present invention is a perovskite type complex oxide containing at least an alkaline earth metal element and at least one element selected from titanium, zirconium, and niobium, and has sufficient infrared reflectivity. Moreover, a black material having sufficient infrared reflectivity is obtained by further containing a manganese element and/or an iron element in this complex oxide. Further, the two perovskite type complex oxides have higher infrared reflectivity when a Group IIIa element in the periodic table such as aluminum and gallium and a zinc element are contained in the two perovskite type complex oxides.
- Such an infrared reflective material has high thermal stability and heat resistance because inorganic components stable with respect to heat are used, and has no concern about safety and environmental problems because chromium is not contained. Additionally, the infrared reflective material is resistant to dissolution in water, and reduction in infrared reflectivity caused by elution is small. For that reason, the infrared reflective material can be used for relaxation of the heat island phenomenon and the like by applying the infrared reflective material to roofs and outer walls of buildings, or applying the infrared reflective material to roads and pavements. In addition, the infrared reflective material can be produced relatively inexpensively because without using any expensive raw material, and because the infrared reflective material can be produced in the air.
- An infrared reflective material is a perovskite type complex oxide containing at least an alkaline earth metal element, at least one element selected from titanium, zirconium, and niobium, and an oxygen element.
- the perovskite type structure include an ABO 3 type structure (wherein A is one or more alkaline earth metal elements, B is at least one element selected from titanium, zirconium, and niobium, and O is an oxygen element.); and a layered perovskite type structure (n(ABO 3 ) ⁇ AO (wherein A, B, and O are the same as those mentioned above, the layered perovskite type structure can be expressed as A n+1 B n O 3n+1 , and has a structure such that an AO layer is interposed between two perovskite units of ABO 3 .
- examples of the layered perovskite type structure include Ca 3 Ti 2 O 7 and Ca 4 Ti 3 O 10 .)).
- the content of the alkaline earth metal element and the content of at least one element selected from titanium, zirconium, and niobium are properly adjusted to form desired perovskite type structure.
- Earth metal element, at least one selected from calcium, strontium, and barium is preferable because those have high infrared reflectivity, and form a complex oxide having a perovskite type structure.
- Magnesium is an alkaline earth metal element. Because single use of magnesium cannot usually form the perovskite type structure but forms an ilmenite type structure, it is not preferable.
- a complex oxide having a perovskite type structure is obtained by using an alkaline earth metal element other than magnesium, e.g., calcium, strontium, and barium, in combination with a magnesium element as an alkaline earth metal element.
- the complex oxide has infrared reflectivity higher than that of those to which magnesium is not added, and has particularly high near-infrared reflectivity. Accordingly, addition of magnesium is preferable.
- the content of magnesium can be properly set according to desired performance of infrared reflectivity or the like.
- the atomic ratio of the magnesium element (Mg) to an alkaline earth metal (A) other than magnesium is preferably 1.0 ⁇ 10 -6 ⁇ Mg/A ⁇ 0.20, and more preferably 1.0 ⁇ 10 -6 ⁇ Mg/A ⁇ 0.12.
- Mg designates the number of moles of element of magnesium
- A designates the number of moles of element of alkaline earth metal other than magnesium.
- the infrared reflective material according to the present invention further contains a Group IIIa element in the periodic table such as boron, aluminum, gallium, and indium in the perovskite type complex oxide containing an alkaline earth metal element, at least one element selected from titanium, zirconium, and niobium, and an oxygen element.
- a Group IIIa element in the periodic table such as boron, aluminum, gallium, and indium in the perovskite type complex oxide containing an alkaline earth metal element, at least one element selected from titanium, zirconium, and niobium, and an oxygen element.
- Containing of the Group IIIa element in the periodic table is more preferable because infrared reflectivity is higher than that of those to which the Group IIIa element in the periodic table is not added.
- Containing of at least one selected from aluminum and gallium among the Group IIIa elements in the periodic table is more preferable because particularly high near-infrared reflectivity is obtained.
- the Group IIIa element in the periodic table may exist on the particle surface of the perovskite type complex oxide and/or within the particles of the perovskite type complex oxide, and preferably exists within the particles of the perovskite type complex oxide.
- the content of the Group IIIa element in the periodic table can be properly set according to performances such as desired infrared reflectivity.
- An amount of 0.0005 ⁇ Al/B ⁇ 1.5 in the atomic ratio (molar ratio) of the Group IIIa element (Al) in the periodic table to the at least one element (B) selected from titanium, zirconium, and niobium is preferably contained.
- Al designates the number of moles of the Group IIIa element in the periodic table
- B designates the number of moles of the at least one element selected from titanium, zirconium, and niobium.
- a value of the atomic ratio (molar ratio) of these Al/B is preferably in the range of 0.0005 to 1.5, because high infrared reflectivity is obtained, more preferably 0.001 ⁇ Al/B ⁇ 0.45, still more preferably 0.005 ⁇ Al/B ⁇ 0.35, and most preferably 0.005 ⁇ Al/B ⁇ 0.25. Due to an insufficient effect of addition, a value of Al/B smaller than 0.0005 is not preferable. Because production of another phase is started, a value of Al/B larger than 1.5 is not preferable.
- the infrared reflective material according to the present invention further contains a zinc element in the perovskite type complex oxide containing an alkaline earth metal element, at least one element selected from titanium, zirconium, and niobium and an oxygen element or in the perovskite type complex oxide further containing a Group IIIa element in the periodic table. Containing of the zinc element is preferable because infrared reflectivity is higher than that of those to which the zinc element is not added.
- the zinc element may exist on the particle surface of the perovskite type complex oxide and/or within the particles of the perovskite type complex oxide, and preferably exists within the particles of the perovskite type complex oxide.
- the content of the zinc element can be properly set according to performances such as desired infrared reflectivity.
- An amount of 1.0 ⁇ 10 -6 ⁇ Zn/B ⁇ 0.20 in the atomic ratio (molar ratio) of the zinc element (Zn) to the at least one element (B) selected from titanium, zirconium, and niobium is preferably contained.
- Zn designates the number of moles of the zinc element
- B designates the number of moles of the at least one element selected from titanium, zirconium, and niobium.
- a value of the atomic ratio (molar ratio) of these Zn/B is preferably in the range of 1.0 ⁇ 10 -6 to 0.20 because high infrared reflectivity is obtained, more preferably 1.0 ⁇ 10 -6 ⁇ Zn/B ⁇ 0.15, and still more preferably 0.005 ⁇ Zn/B ⁇ 0.12. Because of an insufficient effect of addition, a value of Zn/B smaller than 1.0 ⁇ 10 -6 is not preferable. Because production of another phase is started or a drastic change in the color of the powder is observed, a value of Zn/B larger than 0.20 is not preferable.
- the ratio of ⁇ / ⁇ is usually adjusted so as to be 1 when the content of the alkaline earth metal element is ⁇ mol, the total content of the at least one element selected from titanium, zirconium, and niobium, the Group IIIa element in the periodic table, and the zinc element is ⁇ mol.
- a still more preferable range is 1 ⁇ ⁇ / ⁇ ⁇ 1.1.
- a complex oxide that is a perovskite type complex oxide containing at least an alkaline earth metal element and at least one element selected from titanium, zirconium, and niobium, and does not contain a manganese element and/or an iron element mentioned later is a white material, and has high reflectance.
- the solar reflectance is preferably not less than 70%, more preferably not less than 80%, and still more preferably not less than 90%.
- the whiteness of the complex oxide is preferably not less than 75, more preferably not less than 80, and still more preferably not less than 85, when the whiteness is expressed by a lightness L* value of CIE 1976 Lab (L*a*b* color system) (whiteness is larger as the L* value is larger).
- the infrared reflective material according to the present invention can have an increased lightness L* value, and therefore can be used as a white pigment.
- an a* value and a b* value of the L*a*b* color system determined in the same manner as in the case of the L* value are indices showing hue and saturation.
- the a* value larger toward the positive side shows that the color is redder, while the a* value larger toward the negative side shows that the color is greener.
- the b* value larger toward the positive side shows that the color is yellower, while the b* value larger toward the negative side shows that the color is bluer.
- the a* value can suppress redness to be approximately -3 to 10
- the b* value can suppress yellowness to be approximately -1 to 10, for example.
- the infrared reflective material according to the present invention further contains a manganese element and/or an iron element in the perovskite type complex oxide containing the alkaline earth metal element, at least one element selected from titanium, zirconium, and niobium, and an oxygen element. Containing of the manganese element and/or the iron element increases blackness.
- the manganese element and the iron element may exist on the particle surface of the perovskite type complex oxide and/or within particles thereof, and preferably exists within the particles of the perovskite type complex oxide.
- the content of the manganese element and the iron element can be properly set according to performances such as desired infrared reflectivity and blackness.
- manganese element an amount of 0.01 ⁇ Mn/B ⁇ 3.0 in the atomic ratio (molar ratio) of manganese (Mn) to the at least one element (B) selected from titanium, zirconium, and niobium is preferably contained.
- Mn expresses the number of moles of the manganese element
- B expresses the number of moles of the at least one element selected from titanium, zirconium, and niobium.
- a value of the atomic ratio (molar ratio) Mn/B in the range of 0.01 to 3.0 is preferable from the viewpoint of infrared reflectivity and blackness, more preferably 0.05 ⁇ Mn/B ⁇ 3.0, still more preferably 0.1 ⁇ Mn/B ⁇ 3.0, and most preferably 0.3 ⁇ Mn/B ⁇ 3.0. Due to insufficient effect of addition and insufficient blackness, a value of Mn/B smaller than 0.01 is not preferable. Because the alkaline earth metal tends to be easily eluted when a value of Mn/B larger than 3.0, a value of Mn/B larger than 3.0 is not preferable.
- an amount of 0.01 ⁇ Fe/B ⁇ 1.0 in the atomic ratio (molar ratio) of iron (Fe) to the at least one element (B) selected from titanium, zirconium, and niobium is preferably contained.
- Fe designates the number of moles of the iron element
- B designates the number of moles of the at least one element selected from titanium, zirconium, and niobium.
- a value of the atomic ratio (molar ratio) Fe/B in the range of 0.01 to 1.0 is preferable from the viewpoint of infrared reflectivity and blackness, more preferably 0.05 ⁇ Fe/B ⁇ 0.8, and still more preferably 0.07 ⁇ Fe/B ⁇ 0.8. Due to insufficient effect of addition and insufficient blackness, a value of Fe/B smaller than 0.01 is not preferable. Because synthesis as a single phase is impossible, a value of Fe/B larger than 1.0 is not preferable. Both of the manganese element and the iron element can also be contained. From the viewpoint of infrared reflectivity and blackness, it is preferable that the content of the manganese element and that of the iron element be in the above-mentioned respective ranges.
- the alkaline earth metal element at least one element selected from calcium, strontium and barium is preferable because of high infrared reflectivity, and because these can form a complex oxide having a perovskite type structure.
- a complex oxide having a perovskite type structure is obtained by using an alkaline earth metal element other than magnesium, e.g., calcium, strontium, and barium, in combination with a magnesium element as an alkaline earth metal element.
- the complex oxide has infrared reflectivity higher than that of those to which magnesium is not added, and has particularly high near-infrared reflectivity. Accordingly, addition of magnesium is more preferable.
- the content of magnesium can be properly set according to performances such as desired infrared reflectivity.
- the atomic ratio (molar ratio) of the magnesium element (Mg) to an alkaline earth metal (A) other than magnesium is preferably 1.0 ⁇ 10 -6 ⁇ Mg/A ⁇ 0.20, and more preferably 1.0 ⁇ 10 -6 ⁇ Mg/A ⁇ 0.12.
- Mg designates the number of moles of element of magnesium
- A designates the number of moles of element of alkaline earth metal other than magnesium.
- the infrared reflective material according to the present invention further contains a Group IIIa element in the periodic table such as boron, aluminum, gallium, and indium in the perovskite type complex oxide containing an alkaline earth metal element, at least one element selected from titanium, zirconium, and niobium, an oxygen element, and a manganese element and/or an iron element.
- a Group IIIa element in the periodic table such as boron, aluminum, gallium, and indium in the perovskite type complex oxide containing an alkaline earth metal element, at least one element selected from titanium, zirconium, and niobium, an oxygen element, and a manganese element and/or an iron element.
- Containing of the Group IIIa element in the periodic table is more preferable because infrared reflectivity is higher than that of those to which the Group IIIa element in the periodic table is not added.
- Containing of at least one selected from aluminum and gallium among the Group IIIa elements in the periodic table
- the Group IIIa element in the periodic table may exist on the particle surface of the perovskite type complex oxide and/or within the particles of the perovskite type complex oxide, and preferably exists within the particles of the perovskite type complex oxide.
- the content of the Group IIIa element in the periodic table can be properly set according to performances such as desired infrared reflectivity.
- An amount of 0.0005 ⁇ Al/B ⁇ 1.5 in the atomic ratio (molar ratio) of the Group IIIa element (Al) in the periodic table to at least one element (B) selected from titanium, zirconium, and niobium is preferably contained.
- Al designates the number of moles of the Group IIIa element in the periodic table
- B designates the number of moles of the at least one element selected from titanium, zirconium, and niobium.
- a value of the atomic ratio (molar ratio) of these Al/B is preferably in the range of 0.0005 to 1.5 from the viewpoint of infrared reflectivity and blackness, more preferably 0.001 ⁇ Al/B ⁇ 1.3, still more preferably 0.005 ⁇ Al/B ⁇ 1.0. Due to an insufficient effect of addition, a value of Al/B smaller than 0.0005 is not preferable. Because production of another phase is started or the color of the powder is significantly deviated, a value of Al/B larger than 1.5 is not preferable.
- the infrared reflective material according to the present invention further contains a zinc element in the perovskite type complex oxide containing an alkaline earth metal element, at least one element selected from titanium, zirconium, and niobium, an oxygen element, a manganese element and/or an iron element, or in the perovskite type complex oxide further containing a Group IIIa element in the periodic table such as boron, aluminum, gallium, and indium. Containing of the zinc element is preferable because infrared reflectivity is higher than that of those to which the zinc element is not added.
- the zinc element may exist on the particle surface of the perovskite type complex oxide and/or within the particles of the perovskite type complex oxide, and preferably exists within the particles of the perovskite type complex oxide.
- the content of the zinc element can be properly set according to performances such as desired infrared reflectivity.
- An amount of 1.0 ⁇ 10 -6 ⁇ Zn/B ⁇ 0.20 in the atomic ratio (molar ratio) of the zinc element (Zn) to the at least one element (B) selected from titanium, zirconium, and niobium is preferably contained.
- Zn designates the number of moles of the zinc element
- B designates the number of moles of the at least one element selected from titanium, zirconium, and niobium.
- a value of the atomic ratio (molar ratio) of these Zn/B is preferably in the range of 1.0 ⁇ 10 -6 to 0.2 because high infrared reflectivity is obtained, more preferably 1.0 ⁇ 10 -6 ⁇ Zn/B ⁇ 0.15, and still more preferably 1.0 ⁇ 10 -6 ⁇ Zn/B ⁇ 0.12. Because of an insufficient effect of addition, a value of Zn/B smaller than 1.0 ⁇ 10 -6 is not preferable. Because production of another phase is started or a drastic change in the color of the powder is observed, a value of Zn/B larger than 0.20 is not preferable.
- the ratio ⁇ / ⁇ is usually adjusted so as to be 1 when the content of the alkaline earth metal element is ⁇ mol, and the total content of the at least one element selected from titanium, zirconium, and niobium, the manganese element and/or the iron element, the Group IIIa element in the periodic table, and the zinc element is ⁇ mol.
- a still more preferable range is 1 ⁇ ⁇ / ⁇ ⁇ 1.1.
- the color of the powder changes to black in the perovskite type complex oxide containing at least an alkaline earth metal element, at least one element selected from titanium, zirconium, and niobium, and a manganese element and/or an iron element.
- the blackness of the complex oxide is preferably not more than 45, more preferably not more than 40, and still more preferably not more than 32, when the blackness is expressed by a lightness L* value of CIE 1976 Lab (L*a*b* color system), which is the same as mentioned above, (blackness is larger as the L* value is smaller).
- the infrared reflective material according to the present invention can have a reduced lightness L* value, and therefore can be used as a black pigment.
- the a* value and the b* value of the L*a*b* color system determined in the same manner as the L* value can suppress redness to be approximately 0 to 20, and the b* value can suppress yellowness to be approximately -1 to 10, for example.
- the infrared reflectivity changes according to the color of the powder.
- a black powder that easily absorbs the infrared rays has infrared reflectivity relatively smaller than that of a white powder that reflects the infrared rays.
- the complex oxide containing the manganese element and/or the iron element preferably has the solar reflectance of not less than 10%, more preferably not less than 12%, still more preferably not less than 15%, further still more preferably not less than 20%, and most preferably not less than 25%.
- Amounts of the alkaline earth metal, at least one element selected from titanium, zirconium, and niobium, manganese, the iron element, the Group IIIa element in the periodic table, and the zinc element contained in the complex oxide are determined with fluorescent X-ray spectrographic analysis. The amount of oxygen necessary to maintain charge balance based on the valence of those components is calculated. The crystalline structure of the complex oxide can also be checked with X-ray diffraction.
- solute atoms form a solid solution and are contained within the particles of the complex oxide or the particle surface of the complex oxide by forming a substitutional solid solution in which solvent atoms on the lattice points of the perovskite type complex oxide (specifically, an alkaline earth metal, atoms of at least one selected from titanium, zirconium, and niobium) are replaced by the solute atoms (specifically, manganese, iron atoms, Group IIIa atoms in the periodic table, or zinc atoms), or by forming an interstitial solid solution in which solute atoms enter the lattice gaps of the perovskite type complex oxide.
- solvent atoms on the lattice points of the perovskite type complex oxide specifically, an alkaline earth metal, atoms of at least one selected from titanium, zirconium, and niobium
- solute atoms specifically, manganese, iron atoms, Group IIIa atoms in the periodic table, or zinc
- a solid solution is formed in which the solvent atoms of at least one selected from titanium, zirconium, and niobium are replaced by the solute atoms of the manganese and/or the iron, the Group IIIa atoms in the periodic table, or the zinc.
- the complex oxide preferably maintains the perovskite type structure.
- Containing of the manganese element, the iron element, the Group IIIa element in the periodic table, or the zinc element can be checked based on the result of the X-ray diffraction that no peak of a phase other than the complex oxide appears.
- Impurities derived from various raw materials may be inevitably mixed in the infrared reflective material according to the present invention.
- Cr is not contained as much as possible. Even if Cr is contained as impurities, the content thereof is not more than 1% by weight. Particularly, the content of Cr 6+ that causes concern about safety is preferably not more than 10 ppm.
- the infrared reflective material according to the present invention can have various particle forms and particle sizes by changing production conditions.
- the particle form may be tabular, granular, approximately spherical, needle-like, and indefinite, for example.
- an average particle size (arithmetic mean value of the largest diameter in one particle) measured from an electron micrograph is approximately 0.02 to 20.0 ⁇ m.
- tinting strength is reduced because the particle size is too large.
- the average particle size is preferably 0.1 to 5.0 ⁇ m, more preferably 0.2 to 4.5 ⁇ m, and still more preferably 0.3 to 4.0 ⁇ m.
- a BET specific surface area value of the infrared reflective material according to the present invention is approximately 0.05 to 80 m 2 /g. At a BET specific surface area value ofless than 0.05 m 2 /g, the particles are coarse, or the particles are mutually sintered and thus tinting strength is reduced. More preferably, the BET specific surface area value is 0.2 to 15 m 2 /g, and still more preferably 0.3 to 5 m 2 /g.
- the BET specific surface area can be measured by a MONOSORB MS-18 (made by Yuasa-Ionics Company, Limited).
- the average particle size wherein the particle form is regarded to be spherical can be calculated with the following expression 1.
- the average particle size calculated from the BET specific surface area value is approximately 0.02 to 30 ⁇ m.
- L 6 / ⁇ ⁇ S , wherein L is an average particle size ( ⁇ m), ⁇ is a density of a sample (g/cm 3 ), and S is a BET specific surface area value of the sample (m 2 /g).
- the infrared reflective material according to the present invention can be used for coating materials, inks, plastics, ceramics, electronic materials, and the like.
- the particle surface thereof may be coated with an inorganic compound and/or an organic compound when necessary.
- the inorganic compound preferably include a compound of at least one selected from silicon, zirconium, aluminum, titanium, antimony, phosphorus, and tin. Silicon, zirconium, aluminum, titanium, antimony, and tin are more preferably a compound of oxide, hydrated oxide, or hydroxide. Phosphorus is more preferably a compound of phosphoric acid or phosphate.
- the organic compound include organic silicon compounds, organometallic compounds, polyols, alkanolamines or derivatives thereof, higher fatty acids or metal salts thereof, and higher hydrocarbons or derivatives thereof At least one selected from these can be used.
- the infrared reflective material according to the present invention contains an alkaline earth metal element and at least one element selected from titanium, zirconium, and niobium, and contains a manganese element and/or an iron element, a Group IIIa element in the periodic table such as boron, aluminum, gallium, and indium, and a zinc element when necessary.
- the alkaline earth metal elements, the manganese element, the iron element, and the like may be eluted in water, and are easily eluted particularly in acidic water. For this reason, in the case where water elution properties need to be controlled, it is effective that the particle surface of the infrared reflective material is coated with an inorganic compound.
- Examples of such an inorganic compound include a compound of at least one selected from silicon, zirconium, aluminum, titanium, antimony, phosphorus, and tin.
- Silicon, zirconium, aluminum, titanium, antimony, and tin are more preferably a compound of oxide, hydrated oxide, or hydroxide.
- Phosphorus is more preferably a compound of phosphoric acid or phosphate.
- oxides, hydrated oxides, or hydroxides of silicon and aluminum are preferable. More preferably, the oxides, hydrated oxides, or hydroxides of silicon (hereinafter sometimes referred to as silica) form high-density silica or porous silica.
- silica used for coating becomes porous or non-porous (high-density).
- high-density silica easily forms fine coating, and has a high effect of controlling the water elution properties of the infrared reflective material, and therefore is more preferable.
- a first coating layer of high-density silica may exist on the particle surface of the infrared reflective material, and a second coating layer of porous silica or an oxide, hydrated oxide, and hydroxide of aluminum (hereinafter sometimes referred to as alumina) may exist thereon.
- the silica coating can be observed with an electron microscope.
- the amount of the inorganic compound to be coated can be set properly.
- the amount of the inorganic compound can be measured by an ordinary method such as fluorescent X-ray spectrographic analysis and ICP optical emission spectrometry.
- the infrared reflective material according to the present invention can be produced using a conventional method for producing a perovskite type complex oxide.
- the following methods or the like can be used: the so-called solid-phase synthesis method comprising mixing an alkaline earth metal compound with a compound of at least one selected from titanium, zirconium, and niobium, and firing the mixture using an electric furnace, a rotary kiln, or the like; the so-called oxalate method comprising synthesizing an alkaline earth metal with an oxalate of at least one selected from titanium, zirconium, and niobium in a water system, and subsequently firing the mixture; the so-called citrate method comprising synthesizing an alkaline earth metal and a citrate of at least one selected from titanium, zirconium, and niobium in a water system, and subsequently firing the mixture; and the so-called hydrothermal synthesis method comprising mixing an aqueous solution of an alkaline earth
- a manganese compound, an iron compound, a compound of a Group IIIa element in the periodic table, or a zinc compound can be added and mixed at the time of mixing an alkaline earth metal compound with a compound of at least one selected from titanium, zirconium, and niobium.
- a manganese compound, an iron compound, a compound of a Group IIIa element in the periodic table, or a zinc compound can be added, or mixed at the time of synthesizing oxalate or the like in the water system.
- a manganese compound, an iron compound, a compound of a Group IIIa element in the periodic table, or a zinc compound can be added or fired at the time of firing a mixture of an alkaline earth metal compound with a titanium compound, or firing a synthesized product.
- a solid-phase synthesis method comprising mixing and firing an alkaline earth metal compound and a compound of at least one selected from titanium, zirconium, and niobium is preferable because a perovskite type complex oxide having a proper particle size is obtained.
- a solid-phase synthesis method comprising mixing and firing a compound of such an alkaline earth metal and a compound of at least one selected from titanium, zirconium, and niobium is preferable because a perovskite type complex oxide having a proper particle size is obtained.
- a method comprising adding and mixing a manganese compound and/or an iron compound and firing the mixture at the time of mixing an alkaline earth metal compound with a compound of at least one selected from titanium, zirconium, and niobium is preferable because a perovskite type complex oxide having a proper particle size is obtained.
- a method comprising adding and mixing the Group IIIa compound in the periodic table or a zinc compound, and firing the mixture at the time of mixing an alkaline earth metal compound with a compound of at least one selected from titanium, zirconium, and niobium, or when necessary a manganese compound and/or an iron compound is preferable because a perovskite type complex oxide having a proper particle size is obtained.
- the manganese element, the iron element, the Group IIIa element in the periodic table, or the zinc element easily exists within the particles of the perovskite type complex oxide, and it is preferable.
- oxides, hydroxides, carbonates, and the like can be used as the alkaline earth metal compound, and oxides, hydroxides, carbonates, and the like can be used as the compound of at least one selected from titanium, zirconium, and niobium. Oxides thereof, hydroxides thereof, carbonates thereof, and the like can be used as the manganese compound, the iron compound, the compound of the Group IIIa in the periodic table, or the zinc compound. Next, each of the raw material compounds is weighed, and mixed.
- a mixing method may be any of a dry blending method comprising mixing raw material compounds in the state of a powder, and a wet blending method comprising mixing raw material compounds in the state of a slurry, and can be performed using the conventional mixers such as stirring mixing machines. Mixing can also be performed using various kinds of grinders, spray driers, granulators, molding machines, and the like at the time of crushing, drying, granulation, and molding.
- these compounds are made to exist within the particle surface of the compound of at least one selected from titanium, zirconium, and niobium and/or the particles thereof in advance. This is preferable because the solid-phase synthesis reaction is uniformly performed and thus a uniform infrared reflective material is easily obtained.
- the manganese compound, the iron compound, the compound of the Group IIIa in the periodic table, or the zinc compound on the particle surface of the compound such as oxides, hydrated oxides, hydroxides, and the like of at least one selected from titanium, zirconium, and niobium in advance, and making these compounds to exist therein or by making these compounds to exist within the particles of such a compound in advance, the manganese element, the iron element, the Group IIIa element in the periodic table, or the zinc element easily exists within the particles of the perovskite type complex oxide, and it is preferable.
- the method is not particularly limited, and a known method can be used.
- the temperature of firing may be at least a temperature at which the raw material compounds make a solid-phase reaction.
- the temperature may be in the range of 1000 to 1500°C.
- the atmosphere at the time of firing may be any atmosphere, firing in the air is preferable in order to keep a sufficient infrared reflectivity.
- a fusing agent such as sodium chloride and potassium chloride may be added.
- a firing time can be set properly, and is preferably for 0.5 to 24 hours and more preferably for 1.0 to 12 hours. At a firing time shorter than 0.5 hours, often the reaction does not sufficiently progress. On the other hand, at a firing time longer than 24 hours, hardness of the particles may be increased by sintering, or unusually coarse particles may be produced.
- a firing treatment agent particle size regulating agent
- alkali metal compounds, silicon compounds such as silica and silicate, tin compounds such as tin oxide and tin hydroxide, and the compounds of the Group IIIa elements in the periodic table such as boron, aluminum, gallium, and indium can also be used.
- the firing treatment agent is not limited to these, and various inorganic compounds or organic compounds can be used.
- the amount of the firing treatment agent (particle size regulating agent) to be added can be set properly, an amount not to reduce infrared reflectivity is preferable.
- addition of the alkali metal compound to the mixture of the raw material compound and firing is preferable because an infrared reflective material having more uniform particle size is easily obtained.
- addition of the alkali metal compound also has an advantage that crushing after firing is relatively easy. Even if the alkali metal compound remains in the obtained infrared reflective material, any adverse influence on infrared reflectivity is not recognized, and the remaining alkali metal compound can be dissolved by rinsing to be removed.
- potassium compounds such as potassium chloride, potassium sulfate, potassium nitrate, and potassium carbonate
- sodium compounds such as sodium chloride, sodium sulfate, sodium nitrate, and sodium carbonate
- lithium compounds such as lithium chloride, lithium sulfate, lithium nitrate, and lithium carbonate, and the like
- the amount of the alkali metal compound to be added in terms of conversion of an alkali metal into an oxide (K 2 O, Na 2 O Li 2 O, or the like) is preferably 0.01 to 15 parts by weight based on 100 parts by weight of the mixture of the raw material compounds, and more preferably 0.1 to 6 parts by weight.
- Crystallinity of the complex oxide is further increased by firing the complex oxide obtained by the method, particularly by the solid-phase synthesis method again.
- This can suppress water elution properties of the alkaline earth metal elements, the manganese element, and the iron element, and is preferable.
- the temperature of firing the complex oxide again is preferably in the range of 200 to 1500°C, and more preferably 400 to 1200°C.
- the atmosphere at the time of firing the complex oxide again may be any atmosphere, firing in the air is preferable in order to keep a sufficient infrared reflectivity.
- the time of firing the complex oxide again can be set properly, and is preferably for 0.5 to 24 hours and more preferably for 1.0 to 12 hours.
- a conventional surface treatment method used for a titanium dioxide pigment or the like can be used to coat the particle surface of the thus-obtained infrared reflective material with an inorganic compound or an organic compound.
- an inorganic compound or an organic compound be added to a slurry of the infrared reflective material for coating, and more preferable that the inorganic compound or the organic compound be neutralized in the slurry to deposit for coating.
- the inorganic compound or the organic compound may be added to powder of the infrared reflective material, and mixed for coating.
- an aqueous slurry of the infrared reflective material is adjusted at pH of not less than 8 and preferably at 8 to 10 with an alkali compound such as sodium hydroxide, potassium hydroxide, and ammonia, for example. Then, the aqueous slurry is heated to not less than 70°C and preferably to 70 to 105°C.
- a silicate is added to the aqueous slurry of the infrared reflective material.
- various silicates such as sodium silicate and potassium silicate can be used.
- Addition of the silicate is usually preferably performed over not less than 15 minutes, and more preferably over not less than 30 minutes. Next, after addition of the silicate is completed, further full stirring and mixing are performed when necessary. Then, the slurry is neutralized with an acid while the temperature of the slurry is kept at not less than 80°C and more preferably at not less than 90°C.
- the acid used here include sulfuric acid, hydrochloric acid, nitric acid, phosphoric acid, and acetic acid. These can adjust the pH of the slurry preferably at not more than 7.5 and more preferably at not more than 7 so that the particle surface of the infrared reflective material can be coated with high-density silica.
- an acid such as sulfuric acid, hydrochloric acid, nitric acid, phosphoric acid, and acetic acid is added to an aqueous slurry of the infrared reflective material to adjust pH at 1 to 4 and preferably at 1.5 to 3.
- the temperature of the slurry is preferably adjusted at 50 to 70°C.
- a silicate and an acid are added to form a coating of porous silica.
- various silicates such as sodium silicate and potassium silicate can be used.
- Addition of the silicate is usually preferably performed over not less than 15 minutes, and more preferably over not less than 30 minutes. After addition of the silicate is completed, an alkali compound is added when necessary to adjust the pH of the slurry at approximately 6 to 9.
- an alkali compound is added when necessary to adjust the pH of the slurry at approximately 6 to 9.
- the particle surface of the infrared reflective material can be coated with porous silica.
- a slurry of the infrared reflective material is neutralized at pH of 8 to 9 with an alkali such as sodium hydroxide, and heated to a temperature of not less than 50°C, and next, an aluminum compound and an aqueous acid are added concurrently.
- an aluminum compound aluminates such as sodium aluminate and potassium aluminate can be suitably used.
- aqueous acid aqueous solutions of sulfuric acid, hydrochloric acid, nitric acid, and the like can be suitably used.
- the concurrent addition means a method for continuously or intermittently adding a small amount of the aluminum compound and a small amount of the aqueous acid separately to a reactor.
- the aluminum compound and the aqueous acid be simultaneously added over approximately 10 minutes to 2 hours while the pH in the reactor is kept at 8.0 to 9.0.
- the aqueous acid is further added to adjust the pH at approximately 5 to 6.
- Crystallinity of the complex oxide is further increased by firing the complex oxide coated with the inorganic compound or organic compound again.
- This can suppress water elution properties of the alkaline earth metal elements, the manganese element, and the iron element, and is preferable.
- the temperature of firing the complex oxide again is preferably in the range of 200 to 1500°C, and more preferably in the range of 400 to 1200°C.
- the atmosphere at the time of firing the complex oxide again may be any atmosphere, firing in the air is preferable in order to keep a sufficient infrared reflectivity.
- the time of firing the complex oxide again can be set properly, and is preferably for 0.5 to 24 hours and more preferably for 1.0 to 12 hours.
- the complex oxide obtained by the method can be used in various forms such as powder and a molded body.
- the complex oxide In the case where the complex oxide is used as powder, it may be properly ground when necessary to adjust the particle size thereof
- the powder thereof may be molded into an appropriate size and shape.
- impact mills such as hammer mills and pin mills, grinding mills such as roller mills and pulverizers, and stream mills such as jet mills can be used, for example.
- a molding machine general-purpose molding machines such as extrusion machines and granulators can be used, for example.
- the infrared reflective material according to the present invention has sufficient infrared reflectivity
- mixing of a compound having other infrared reflectivity or a compound having an infrared shielding (absorption) ability can further enhance infrared reflectivity, or can complement reflective performance at a specific wavelength.
- the compound having infrared reflectivity or the compound having an infrared shielding (absorption) ability those conventionally used can be used.
- examples thereof include inorganic compounds such as titanium dioxide, antimony-doped tin oxide, tungsten oxide, and lanthanum boride, and metal powders such as metallic silver powder and metallic copper powder. Titanium dioxide and metal powder are more preferable.
- the kind and mixing proportion of the compound having infrared reflectivity or the compound having an infrared shielding (absorption) ability can be properly selected according to application thereof.
- the infrared reflective material according to the present invention has a color of white or black. Mixing of other pigment to this can further strengthen whiteness or blackness, or can provide the infrared reflective material having a color such as red, yellow, green, blue, and intermediate colors thereof
- the pigment inorganic pigments, organic pigments, lake pigments, and the like can be used.
- the inorganic pigment include white pigments such as titanium dioxide, zinc white, and precipitated barium sulfate, red pigments such as iron oxide, blue pigments such as ultramarine blue and Prussian blue (potassium ferric ferrocyanide), black pigments such as carbon black, and pigments such as aluminum powder.
- the organic pigment include organic compounds such as anthraquinone, perylene, phthalocyanine, azo compounds, and azo methiazo compounds. The kind and mixing proportion of the pigment can be properly selected according to the color and hue.
- the present invention is a coating material characterized by containing the infrared reflective material, and the coating material according to the present invention includes a composition called an ink. Moreover, the present invention is a resin composition characterized by containing the infrared reflective material. Moreover, the present invention is an infrared reflector, wherein the coating material prepared by blending the infrared reflective material is applied onto a base material.
- the infrared reflective material according to the present invention is contained in resins for coating materials, inks, and plastic molded products such as films. Thereby, a composition using the excellent infrared reflectivity of the infrared reflective material can be obtained.
- Such coating materials, inks, and resin compositions can contain an arbitrary amount of the infrared reflective material based on the resin.
- the amount of the infrared reflective material is preferably not less than 0.1% by weight, more preferably not less than 1% by weight, and still more preferably not less than 10% by weight.
- a composition forming material used in each field may be blended, and various kinds of additives may be further blended.
- the infrared reflective material is used as the coating material and the ink
- a solvent, a dispersing agent, a pigment, a filler, an aggregate, a thickener, a flow controlling agent, a leveling agent, a curing agent, a crosslinking agent, a catalyst for curing, and the like can be blended.
- organic components such as acrylic resins, alkyd resins, urethane resins, polyester resins, and amino resins
- inorganic components such as organosilicate, organotitanate, cement, and gypsum can be used, for example.
- the ink film forming material urethane resins, acrylic resins, polyamide resins, salt vinyl acetate resins, chlorinated propylene resins, and the like can be used.
- resins such as heat-curable resins, resins curable at room temperature, and ultraviolet-curable resins can be used for these of the coating film forming material and the ink film forming material without limitation.
- an ultraviolet-curable resin of a monomer or an oligomer a photopolymerization initiator and a photosensitizer are blended. The obtained mixture is applied, and irradiated with ultraviolet light to cure the ultraviolet-curable resin. Thereby, without applying thermal load to the base material, a coating film having high hardness and adhesion is preferably obtained.
- the coating material according to the present invention can be applied onto a base material to produce an infrared reflector.
- This infrared reflector can be used as an infrared shielding material and as a thermal insulation material.
- a base material those of various materials and various quality can be used. Specifically, various building materials, civil engineering materials, and the like can be used.
- the produced infrared reflector can be used as a roof material, a walling material, and a flooring material for houses and factories, and a paving material that forms roads and pavements.
- the thickness of the infrared reflector can be arbitrarily set according to various applications.
- the thickness thereof is usually 0.1 to 0.6 mm, and preferably 0.1 to 0.3 mm.
- the thickness thereof is usually 0.5 to 5 mm and preferably 1 to 5 mm.
- a method for applying or spraying and a method using a trowel are possible. After applying, the coating may be dried, burned, or cured when necessary.
- the infrared reflective material is used as a resin composition
- a resin, a pigment, a dye, a dispersing agent, a lubricant, an antioxidant material, an ultraviolet absorbing agent, a light stabilizer, an antistatic agent, a flame retardant, a sanitizer, and the like are kneaded with the infrared reflective material according to the present invention, and are molded into an arbitrary form such as a film form, a sheet form, and a plate form.
- thermoplastic resins such as polyolefin resins, polystyrene resins, polyester resins, acrylic resins, polycarbonate resins, fluororesins, polyamide resins, cellulosic resins, and polylactic resins, and heat-curable resins such as phenol resins and urethane resins
- a resin composition can be molded into an arbitrary form such as a film, a sheet, and a plate, and can be used as infrared reflectors for industrial uses, agricultural uses, and home uses.
- the composition can be used also as a thermal insulation material that shields infrared rays.
- the specific surface of Sample A was 1.03 m 2 /g, and the average particle size calculated from the value was 0.72 ⁇ m.
- the content of chromium was not more than a measurement limit of detection.
- strontium carbonate SrCO 3 made by Kojundo Chemical Laboratory Co., Ltd., purity of 99.99%) and 2.18 g of high purity titanium dioxide (PT-301 made by Ishihara Sangyo Kaisha, Ltd., purity of 99.99%) were sufficiently mixed and stirred with an agate mortar. Then, a predetermined amount of the mixture was placed into an alumina crucible, and fired at 1200°C for 4 hours to obtain strontium titanate (SrTiO 3 ) having a perovskite type structure (Sample B) was obtained.
- the specific surface of Sample B was 1.33 m 2 /g.
- the content of chromium was not more than a measurement limit of detection.
- the specific surface of Sample I was 0.13 m 2 /g, and the average particle size calculated from the value was 11 ⁇ m.
- the atomic ratio (molar ratio) (Al/Ti) of aluminum and titanium was 0.03.
- the content of chromium was not more than a measurement limit of detection.
- Atomic ratios (molar ratio) (Mn/Ti) of manganese and titanium in Samples J to P were 0.11, 0.25, 0.41, 0.67, 0.96, 1.5, and 2.22 from the results of fluorescent X-ray spectrographic analysis (RIX2100, made by Rigaku Corporation), respectively.
- the content of chromium in each Sample was not more than a measurement limit of detection.
- Table 1 shows each specific surface of Samples J, L, N and P, and each average particle size calculated from the value of the specific surface.
- Atomic ratios (molar ratio) of iron and titanium (Fe/Ti) in Samples Q to T were 0.12, 0.28, 0.43, and 0.70, respectively from the results of fluorescent X-ray spectrographic analysis (RIX2100, made by Rigaku Corporation).
- the content of chromium in each Sample was not more than a measurement limit of detection.
- Example U manganese and magnesium containing calcium titanate (CaTiO 3 : Mn, Mg) having a perovskite type structure (Sample U).
- the atomic ratio (molar ratio) of magnesium to calcium (Mg/Ca) was 0.01, and the atomic ratio (molar ratio) of manganese to titanium (Mn/Ti) was 0.43.
- the content of chromium was not more than a measurement limit of detection.
- Example V manganese and aluminum containing calcium titanate (CaTiO 3 : Mn, Al) having a perovskite type structure (Sample V).
- the specific surface of Sample V was 0.50 m 2 /g, and the average particle size calculated from the value was 2.85 ⁇ m.
- the atomic ratio (molar ratio) of manganese to titanium (Mn/Ti) was 0.43, and the atomic ratio (molar ratio) of aluminum to titanium (Al/Ti) was 0.007.
- the content of chromium was not more than a measurement limit of detection.
- Example 22 the same procedure as that of Example 22 was performed except that 0.01 g of ⁇ -alumina was changed into 0.02 g, to obtain manganese and aluminum containing calcium titanate (CaTiO 3 : Mn, Al) having a perovskite type structure (Sample W).
- the atomic ratio (molar ratio) of manganese to titanium (Mn/Ti) was 0.43
- the atomic ratio (molar ratio) of aluminum to titanium (Al/Ti) was 0.014.
- the content of chromium was not more than a measurement limit of detection.
- Example 22 the same procedure as that of Example 22 was performed except that 0.03 g of gallium oxide (made by Kojundo Chemical Laboratory Co., Ltd., purity of 99.99%) was used instead of 0.01 g of ⁇ -alumina, to obtain manganese and gallium containing calcium titanate (CaTiO 3 : Mn, Ga) having a perovskite type structure (Sample X).
- the atomic ratio (molar ratio) of manganese to titanium (Mn/Ti) was 0.43
- the atomic ratio (molar ratio) of gallium to titanium (Ga/Ti) was 0.014.
- the content of chromium was not more than a measurement limit of detection.
- Example Y manganese and aluminum containing calcium titanate (CaTiO 3 : Mn, Al) having a perovskite type structure.
- the specific surface of Sample Y was 0.74 m 2 /g, and the average particle size calculated from the value was 1.88 ⁇ m.
- the atomic ratio (molar ratio) of manganese to titanium (Mn/Ti) was 1.01, and the atomic ratio (molar ratio) of aluminum to titanium (Al/Ti) was 0.01.
- the content of chromium was not more than a measurement limit of detection.
- Example Z manganese and aluminum containing calcium titanate (CaTiO 3 : Mn, Al) having a perovskite type structure.
- the atomic ratio (molar ratio) of manganese to titanium (Mn/Ti) was 1.25
- the atomic ratio (molar ratio) of aluminum to titanium (Al/Ti) was 0.25.
- the content of chromium was not more than a measurement limit of detection.
- Example a manganese and zinc containing calcium titanate (CaTiO 3 : Mn, Zn) having a perovskite type structure (Sample a).
- the atomic ratio (molar ratio) of manganese to titanium (Mn/Ti) was 0.77, and the atomic ratio (molar ratio) of zinc to titanium (Zn/Ti) was 0.08.
- the content of chromium was not more than a measurement limit of detection.
- Example d manganese and aluminum containing calcium titanate (CaTiO 3 : Mn, Al) having a perovskite type structure.
- the atomic ratio (molar ratio) of manganese to titanium (Mn/Ti) was 1.01
- the atomic ratio (molar ratio) of aluminum to titanium (Al/Ti) was 0.040.
- Calcium was 1 mol based on 1 mol of the total amount of titanium, manganese, and aluminum.
- Example e manganese and aluminum containing calcium titanate (CaTiO 3 : Mn, Al) having a perovskite type structure.
- the atomic ratio (molar ratio) of manganese and titanium (Mn/Ti) was 1.01
- the atomic ratio (molar ratio) of aluminum to titanium (Al/Ti) was 0.040.
- Calcium was 1.06 mol based on 1 mol of the total amount of titanium, manganese, and aluminum.
- Example f manganese and aluminum containing calcium titanate (CaTiO 3 : Mn, Al) having a perovskite type structure.
- the atomic ratio (molar ratio) of manganese to titanium (Mn/Ti) was 1.01
- the atomic ratio (molar ratio) of aluminum to titanium (Al/Ti) was 0.040.
- Calcium was 1.10 mol based on 1 mol of the total amount of titanium, manganese, and aluminum.
- the obtained mixture was made into a slurry with water, and subsequently was evaporated to dryness. Next, the obtained solid was ground with an agate mortar. Then, a predetermined amount of the mixture was placed into an alumina crucible, and fired at 1200°C for 4 hours to obtain manganese and aluminum containing calcium titanate (CaTiO 3 : Mn, Al) having a perovskite type structure (Sample g).
- the atomic ratio (molar ratio) of manganese to titanium (Mn/Ti) was 1.01
- the atomic ratio (molar ratio) of aluminum to titanium (Al/Ti) was 0.040.
- Example 33 the same procedure as that of Example 33 was performed except that 1.11 g of titanium dioxide (TTO-55N made by Ishihara Sangyo Kaisha, Ltd.) not having aluminum hydroxide existing on the particle surface was used instead of titanium dioxide having aluminum hydroxide existing on the particle surface, and 0.04 g of aluminum hydroxide Al(OH) 3 (made by Kojundo Chemical Laboratory Co., Ltd., purity of 99.99%) was used.
- titanium dioxide Ti-55N made by Ishihara Sangyo Kaisha, Ltd.
- Al(OH) 3 made by Kojundo Chemical Laboratory Co., Ltd., purity of 99.99%) was used.
- manganese and aluminum containing calcium titanate (CaTiO 3 : Mn, Al) having a perovskite type structure (Sample h).
- the atomic ratio (molar ratio) of manganese to titanium (Mn/Ti) was 1.01
- the atomic ratio (molar ratio) of aluminum to titanium (Al/Ti) was
- Example 33 the same procedure as that of Example 33 was performed except that 0.31 g of potassium carbonate K 2 CO 3 (made by Kishida Chemical Co., Ltd., purity of 99.5%) was added to the slurry of the mixture, and subsequently evaporated to dryness.
- potassium carbonate K 2 CO 3 made by Kishida Chemical Co., Ltd., purity of 99.5%
- Example 33 the same procedure as that of Example 33 was performed except that 0.17 g of lithium carbonate Li 2 CO 3 (made by Kishida Chemical Co., Ltd., purity of 99.99%) was added to the slurry of the mixture, and subsequently evaporated to dryness.
- Li 2 CO 3 made by Kishida Chemical Co., Ltd., purity of 99.99%) was added to the slurry of the mixture, and subsequently evaporated to dryness.
- manganese and aluminum containing calcium titanate (CaTiO 3 : Mn, Al) having a perovskite type structure (Sample j) was obtained.
- the atomic ratio (molar ratio) of manganese to titanium (Mn/Ti) was 1.01
- the atomic ratio (molar ratio) of aluminum to titanium (Al/Ti) was 0.040.
- a predetermined amount of the mixture was placed into an alumina crucible, and fired at 1200°C for 4 hours to obtain manganese, aluminum, and tin containing calcium titanate (CaTiO 3 : Mn, Al, Sn) having a perovskite type structure (Sample k).
- the atomic ratio (molar ratio) of manganese to titanium (Mn/Ti) was 1.12
- the atomic ratio (molar ratio) of aluminum to titanium (Al/Ti) was 0.040
- the atomic ratio (molar ratio) of tin to titanium (Sn/Ti) was 0.11.
- a predetermined amount of the mixture was placed into an alumina crucible, and fired at 1200°C for 4 hours to obtain manganese, aluminum, and zirconium containing calcium titanate (CaTiO 3 : Mn, Al, Zr) having a perovskite type structure (Sample 1).
- the atomic ratio (molar ratio) of manganese to titanium (Mn/Ti) was 1.12
- the atomic ratio (molar ratio) of aluminum to titanium (Al/Ti) was 0.040
- the atomic ratio (molar ratio) of zirconium to titanium (Zr/Ti) was 0.11.
- a predetermined amount of the mixture was placed into an alumina crucible, and fired at 1200°C for 4 hours to obtain manganese, aluminum, and silicon containing calcium titanate (CaTiO 3 : Mn, Al, Si) having a perovskite type structure (Sample m).
- the atomic ratio (molar ratio) of manganese to titanium (Mn/Ti) was 1.03
- the atomic ratio (molar ratio) of aluminum to titanium (Al/Ti) was 0.040
- the atomic ratio (molar ratio) of silicon to titanium (Si/Ti) was 0.021.
- Sample g obtained in Example 33 was suspended in pure water, and subjected to ultrasonic dispersion for 10 minutes to prepare a slurry. This slurry was heated. While the slurry was kept at 75°C, under stirring, 10% by weight of sodium silicate as SiO 2 was added to the slurry over 60 minutes. Then, the slurry was stirred for 30 minutes at 90°C. Then, 2% sulfuric acid was added over 80 minutes until the pH of the slurry reached 8. A preset temperature was set at 60°C, and subsequently the slurry was matured for 60 minutes.
- the pH of the slurry was adjusted at 9. Then, at the slurry temperature of 60°C, 2% by weight of sodium aluminate as Al 2 O 3 and sulfuric acid were added simultaneously over 60 minutes. The slurry was matured for 30 minutes, and subsequently filtered, washed, and dried to obtain manganese and aluminum containing calcium titanate (CaTiO 3 : Mn, Al) having a perovskite type structure and coated with 10% by weight of silica in a first layer and 2% by weight of alumina in a second layer (Sample n).
- CaTiO 3 calcium titanate
- Example 40 A predetermined amount of Sample n obtained in Example 40 was placed into an alumina crucible, and fired again at 700°C for 1 hour to obtain manganese and aluminum containing calcium titanate (CaTiO 3 : Mn, Al) having a perovskite type structure and coated with silica and alumina (Sample o).
- Example 33 A predetermined amount of Sample g obtained in Example 33 was placed into an alumina crucible, and fired again at 900°C for 4 hours to obtain manganese and aluminum containing calcium titanate (CaTiO 3 : Mn, Al) having a perovskite type structure (Sample p).
- the BET specific surface area value was 1.23 m 2 /g.
- Example 33 A predetermined amount of Sample g obtained in Example 33 was placed into an alumina crucible, and fired again at 800°C for 2 hours to obtain manganese and aluminum containing calcium titanate (CaTiO 3 : Mn, Al) having a perovskite type structure (Sample q).
- Titanium dioxide made by Ishihara Sangyo Kaisha, Ltd. (white material for near-infrared reflection) was used as Comparison Sample r.
- yttrium oxide Y 2 O 3 made by Kojundo Chemical Laboratory Co., Ltd., purity of 99.99%) and 2.27 g of manganese dioxide MnO 2 (made by Kojundo Chemical Laboratory Co., Ltd., purity of 99.99%) were sufficiently mixed and stirred with an agate mortar. Then, a predetermined amount of the mixture was placed into an alumina crucible, and fired at 1200°C for 4 hours to obtain yttrium manganate (YMnO 3 ) (Comparison Sample s).
- Pigment Black 17 ⁇ Cr203> and Pigment Black 27 ⁇ (Co,Fe)(Fe,Cr)204> were used as Comparison Sample t and Comparison Sample u, respectively.
- each of the samples obtained in Examples and Comparative Examples (A to I, and r) was placed into a dedicated cell, and the spectral reflectance (reflectance of light at a wavelength of 350 to 2100 nm) was measured with an ultraviolet visible near-infrared spectrophotometer V-570 (made by JASCO Corporation, using a Spectralon ⁇ made by Labsphere Inc.> as a standard reflecting plate).
- V-570 ultraviolet visible near-infrared spectrophotometer
- the solar reflectance reflectance of near infrared rays of the sunlight at a wavelength in the range of 700 to 2100 nm
- Samples A to F, H, and I have the L* value of not less than 90, which is approximately the same or more than that of Comparison Sample r, and have high whiteness.
- Samples A to F, H, and I show a hue in which the a* value is approximately -3 to 10, and the b* value is approximately 1 to 10. These show that the present invention can be used as a white material.
- the solar reflectances of Samples A to I obtained in Examples all all are higher than that of Comparison Sample r, the relative value is 149 to 124 wherein the solar reflectance of Comparison Sample r is 100, and Samples A to I all have sufficient infrared reflectivity. It was also recognized that containing of aluminum improves the solar reflectance.
- FIG. 1 to 3 show electron micrographs of Samples g, i, and j. It was found that Samples i and j have a particle size more uniform than that of Sample g.
- Fig. 4 shows the result obtained by measuring particle size distribution of Sample i and Sample g with an image processing apparatus (LUZEX AP, made by Seishin Enterprise Co., Ltd.). It was found that Sample i (shown with ⁇ in the diagram) has particle size distribution narrower than that of Sample g (shown with ⁇ in the diagram). In addition, it was found that the average particle size of Sample i is 1.23 ⁇ m and smaller than that of average particle size of Sample g, which is 1.65 ⁇ m,
- the concentration of calcium ion included in the recovered filtrate was measured with a multi-ICP optical emission spectrometer (made by Varian Technologies Japan Ltd., 730-ES type). Table 11 shows values obtained by subtracting an initial value from the concentration of calcium ion after 40 minutes, from that after 120 minutes, and from that after 330 minutes where the concentration of calcium ion after 10 minutes is the initial value. It was confirmed that the amount of Sample L in Example 12 to be eluted in water was significantly smaller than that of calcium manganate, and Sample L has high water elution resistance.
- Table 12 shows the results of solar reflectance at 700 to 2100 nm in Sample g and n to q obtained in Examples.
- Table 13 shows the results obtained by evaluating water elution properties of Samples g, o, and p by the method. It was found that the solar reflectances of Samples n to q bear comparison with that of Sample g. It was also confirmed that the amount of calcium to be eluted in water in Samples g, o, and p was significantly smaller than that of Sample g in Example 33, and Samples g, o, and p have high water elution resistance.
- Table 14 shows the results obtained by evaluating water elution properties of Samples g, p, and q obtained in Examples by the following method.
- 5 g of each sample was placed into a 500-mL of a hydrochloric acid aqueous solution adjusted at 0.2 mol/L (concentration; 10 g/L).
- the slurry was stirred for 2 hours while the temperature thereof was kept at 40°C.
- the slurry was filtered with a membrane filter (A045A047A, made by ADVANTEC) to recover a filtrate.
- the concentration of calcium ion included in the recovered filtrate was measured with a multi-ICP optical emission spectrometer (made by Varian Technologies Japan Ltd., 730-ES type) (first measurement).
- the powder that remained on the membrane filter was dried at 60°C for 2 hours, and again placed into a 500-mL hydrochloric acid aqueous solution adjusted at 0.2 mol/L (concentration; 10 g/L). Stirring for 2 hours at 40°C was performed. The powder and a filtrate were recovered using the membrane filter. The concentration of calcium ion in the filtrate was measured with the above-mentioned ICP optical emission spectrometer (second measurement). Subsequently, this operation was repeated, and the concentration of calcium ion was measured 4 times in total.
- Table 14 shows difference values obtained by subtracting the measured values of the concentration of calcium ion in Sample p from the measured values of the concentration of calcium ion in Sample g and difference values obtained by subtracting the measured values of the concentration of calcium ion in Sample q from the measured values of the concentration of calcium ion in Sample g.
- Samples A to Z and a to q obtained in Examples are powder, and can be blended with a coating material or a resin composition.
- the infrared reflective material according to the present invention is a perovskite type complex oxide containing at least an alkaline earth metal element and at least one element selected from titanium, zirconium, and niobium, and containing a manganese and/or an iron element, a Group IIIa element in the periodic table, a zinc element, and the like when necessary.
- the infrared reflective material has sufficient infrared reflectivity, and in addition, has excellent characteristics such as high thermal stability and heat resistance, and no concern about safety and environmental problems. Accordingly, the infrared reflective material according to the present invention can be used for various infrared reflective applications.
- the infrared reflective material is resistant to dissolution in water and reduction in infrared reflectivity caused by elution is small
- the infrared reflective material can be used for relaxation of the heat island phenomenon or the like, for example, by applying the infrared reflective material onto roofs and outer walls of buildings, by using the infrared reflective material as a resin composition for films and sheets, or by applying the infrared reflective material onto roads and pavements.
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TW201004872A (en) | 2010-02-01 |
CN102037093B (zh) | 2014-09-10 |
JP2013224433A (ja) | 2013-10-31 |
US20110068308A1 (en) | 2011-03-24 |
TWI471269B (zh) | 2015-02-01 |
CA2724691C (fr) | 2016-08-16 |
JP2013173953A (ja) | 2013-09-05 |
CN103351023B (zh) | 2017-09-15 |
JP2014015388A (ja) | 2014-01-30 |
US8906272B2 (en) | 2014-12-09 |
JP5739948B2 (ja) | 2015-06-24 |
JP5677508B2 (ja) | 2015-02-25 |
WO2009142254A1 (fr) | 2009-11-26 |
KR101624366B1 (ko) | 2016-05-25 |
JP5677509B2 (ja) | 2015-02-25 |
JP5554510B2 (ja) | 2014-07-23 |
JP2010202489A (ja) | 2010-09-16 |
CA2724691A1 (fr) | 2009-11-26 |
EP2284240A4 (fr) | 2013-07-24 |
JP2013224256A (ja) | 2013-10-31 |
EP2284240B1 (fr) | 2018-04-18 |
CN102037093A (zh) | 2011-04-27 |
ES2677910T3 (es) | 2018-08-07 |
JP5677510B2 (ja) | 2015-02-25 |
KR20110009680A (ko) | 2011-01-28 |
CN103351023A (zh) | 2013-10-16 |
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